<template>
  <div class="app-container">
    <el-row :gutter="20">
      <!--部门数据-->
      <el-col :span="4" :xs="24">
        <div class="head-container">
          <el-input
            v-model="catalogName"
            placeholder="请输入栏目名称"
            clearable
            size="small"
            prefix-icon="el-icon-search"
            style="margin-bottom: 20px"
          />
        </div>
        <div class="head-container">
          <el-tree
            :data="catalogOptions"
            :props="defaultProps"
            :expand-on-click-node="false"
            :filter-node-method="filterNode"
            ref="tree"
            node-key="id"
            default-expand-all
            highlight-current
            @node-click="handleNodeClick"
          />
        </div>
      </el-col>
      <!--用户数据-->
      <el-col :span="20" :xs="24">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">     
      <el-form-item label="标题" prop="title">
        <el-input
          v-model="queryParams.title"
          placeholder="请输入标题"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="状态" prop="status">
        <el-select v-model="queryParams.status" placeholder="请选择状态" clearable>
          <el-option
            v-for="dict in dict.type.check_status"
            :key="dict.value"
            :label="dict.label"
            :value="dict.value"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="是否推荐" prop="recommend">
        <el-select v-model="queryParams.recommend" placeholder="请选择是否推荐" clearable>
          <el-option
            v-for="dict in dict.type.sys_yes_no"
            :key="dict.value"
            :label="dict.label"
            :value="dict.value"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="是否置顶" prop="toped">
        <el-select v-model="queryParams.toped" placeholder="请选择是否置顶" clearable>
          <el-option
            v-for="dict in dict.type.sys_yes_no"
            :key="dict.value"
            :label="dict.label"
            :value="dict.value"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="更新时间">
        <el-date-picker
          v-model="daterangeUpdateTime"
          style="width: 240px"
          value-format="yyyy-MM-dd"
          type="daterange"
          range-separator="-"
          start-placeholder="开始日期"
          end-placeholder="结束日期"
        ></el-date-picker>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button v-if="this.catalog && this.catalog.id  && this.catalog.type != 'single' && this.catalog.type != 'node'"
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['cms:news:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['cms:news:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="newsList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="标题" align="center" prop="title" />
      <el-table-column label="封面" align="center" prop="thumb" width="100">
        <template slot-scope="scope">
          <image-preview :src="scope.row.thumb" :width="50" :height="50"/>
        </template>
      </el-table-column>
      <el-table-column label="状态" align="center" prop="status">
        <template slot-scope="scope">
          <dict-tag :options="dict.type.ext_status" :value="scope.row.status"/>
        </template>
      </el-table-column>
      <el-table-column label="是否推荐" align="center" prop="recommend">
        <template slot-scope="scope">
          <dict-tag :options="dict.type.sys_yes_no" :value="scope.row.recommend"/>
        </template>
      </el-table-column>
      <el-table-column label="是否置顶" align="center" prop="toped">
        <template slot-scope="scope">
          <dict-tag :options="dict.type.sys_yes_no" :value="scope.row.toped"/>
        </template>
      </el-table-column>
      <el-table-column label="浏览次数" align="center" prop="viewCount" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['cms:news:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['cms:news:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    
    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />
      </el-col>
    </el-row>
    <!-- 添加或修改网站内容对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="800px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
  <el-tabs v-model="tab">
    <el-tab-pane label="基本信息" name="base">
        <el-form-item label="标题" prop="title">
          <el-input v-model="form.title" placeholder="请输入标题" />
        </el-form-item>
        <el-form-item label="信息内容">
          <editor v-model="form.content" :min-height="252"/>
        </el-form-item>
        <el-form-item label="状态" prop="status">
          <el-radio-group v-model="form.status">
            <el-radio
              v-for="dict in dict.type.ext_status"
              :key="dict.value"
              :label="dict.value"
            >{{dict.label}}</el-radio>
          </el-radio-group>
        </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="SEO配置" name="seo">
        <el-form-item label="是否推荐" prop="recommend">
          <el-radio-group v-model="form.recommend">
            <el-radio
              v-for="dict in dict.type.sys_yes_no"
              :key="dict.value"
              :label="dict.value"
            >{{dict.label}}</el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item label="是否置顶" prop="toped">
          <el-radio-group v-model="form.toped">
            <el-radio
              v-for="dict in dict.type.sys_yes_no"
              :key="dict.value"
              :label="dict.value"
            >{{dict.label}}</el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item label="摘要" prop="description">
          <el-input v-model="form.description" type="textarea" placeholder="请输入内容" />
        </el-form-item>
        <el-form-item label="关键字" prop="keywords">
          <el-input v-model="form.keywords" placeholder="请输入关键字" />
        </el-form-item>
        <el-form-item label="信息来源" prop="link">
          <el-input v-model="form.link" placeholder="请输入链接" />
        </el-form-item>
        <el-form-item label="浏览次数" prop="viewCount" v-if="form.id">
          <el-input v-model="form.viewCount" placeholder="请输入浏览次数" />
        </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="附件" name="upload">
        <el-form-item label="封面" prop="thumb">
          <image-upload v-model="form.thumb" :limit="1"/>
        </el-form-item>
        <el-form-item label="附件" prop="files" v-if="form.type == 'files'">
          <file-upload v-model="form.files"/>
        </el-form-item>
        <el-form-item label="附件" prop="files" v-if="form.type == 'album'">
          <image-upload v-model="form.files" :limit="10"/>
        </el-form-item>
    </el-tab-pane></el-tabs>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listNews, getNews, delNews, addNews, updateNews } from "@/api/cms/news";
import { listCatalog } from "@/api/cms/catalog";

export default {
  name: "News",
  dicts: ['ext_status', 'sys_yes_no'],
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 网站内容表格数据
      newsList: [],
      // 弹出层标题
      title: "",
      // 栏目树选项
      catalogOptions: undefined,
      defaultProps: {
        children: "children",
        label: "title"
      },
      // 是否显示弹出层
      open: false,
      // 栏目名称
      catalogName: undefined,
      //当前选中的栏目
      catalog: null,
      // 附件时间范围
      daterangeUpdateTime: [],
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        cataId: null,
        cataIds: null,
        title: null,
        status: null,
        recommend: null,
        toped: null,
        updateTime: null,
      },
      // 表单参数
      form: {},
      tab: 'base',
      // 表单校验
      rules: {
        cataId: [
          { required: true, message: "所属栏目不能为空", trigger: "blur" }
        ],
        title: [
          { required: true, message: "标题不能为空", trigger: "blur" }
        ],
        content: [
          { required: true, message: "信息内容不能为空", trigger: "blur" }
        ]
      }
    };
  },
  created() {
    this.getList();
    this.getCatalogTree();
  },
  methods: {
    /** 查询网站内容列表 */
    getList() {
      this.loading = true;
      this.queryParams.params = {};
      if (null != this.daterangeUpdateTime && '' != this.daterangeUpdateTime) {
        this.queryParams.params["beginUpdateTime"] = this.daterangeUpdateTime[0];
        this.queryParams.params["endUpdateTime"] = this.daterangeUpdateTime[1];
      }
      listNews(this.queryParams).then(response => {
        this.newsList = response.rows;
        this.total = response.total;
        this.loading = false;

        if(this.catalog && this.catalog.type == 'single' && this.total == 0){
          this.handleAdd();
        }
      });
    },
    /** 查询栏目下拉树结构 */
    getCatalogTree() {
      listCatalog().then(response => {
        this.catalogOptions = [];
        const data = { id: 0, title: '全部栏目', children: [] };
        data.children = this.handleTree(response.data, "id", "pid");
        this.catalogOptions.push(data);
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        id: null,
        cataId: this.catalog ?  this.catalog.id : null,
        title: null,
        description: null,
        thumb: null,
        content: null,
        status: '1',
        recommend: 'N',
        toped: 'N',
        viewCount: 0,
        keywords: null,
        link: null,
        files: null,
        createTime: null,
        createBy: null,
        updateTime: null,
        updateBy: null
      };
      this.resetForm("form");
      this.tab = 'base';
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.daterangeUpdateTime = [];
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.id)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    // 筛选节点
    filterNode(value, data) {
      if (!value) return true;
      return data.label.indexOf(value) !== -1;
    },
    // 节点单击事件
    handleNodeClick(data) {
      this.catalog = data;
      if(data.id == 0){
        this.queryParams.cataId = null;
        this.queryParams.params.cataIds = null;
      }else if(!data.children || data.children.length == 0){
        this.queryParams.cataId = data.id;
        this.queryParams.params.cataIds = null;
      }else{
        this.queryParams.cataId = null;
        this.queryParams.params.cataIds = data.id + "," + data.children.map(c => c.id).join(',');
      }
      this.queryParams.cataId = data.id;
      this.handleQuery();
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加网站内容";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const id = row.id || this.ids
      getNews(id).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改网站内容";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.id != null) {
            updateNews(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addNews(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const ids = row.id || this.ids;
      this.$modal.confirm('是否确认删除网站内容编号为"' + ids + '"的数据项？').then(function() {
        return delNews(ids);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('cms/news/export', {
        ...this.queryParams
      }, `news_${new Date().getTime()}.xlsx`)
    }
  }
};
</script>
